function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Amphibian & Reptile Conservation', 15],
    ['Bulletin of the American Museum of Natural History', 9],
    ['Check List', 22],
    ['Geodiversitas', 5],
    ['Herpetologica', 7],
    ['Joan Thomae', 8],
    ['Papéis Avulsos de Zoologia', 5],
    ['PeerJ', 4],
    ['Proceedings of the California Academy of Sciences', 11],
    ['Raffles Bulletin of Zoology', 9],
    ['South American Journal of Herpetology', 8],
    ['ZooKeys', 21],
    ['Zoosystema', 9],
    ['Zoosystematics and Evolution', 5],
    ['Zootaxa', 189],
    ['Other (18)', 29]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=356)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);